Microwave trips the household circuit breaker or GFCI outlet when starting a cook cycle.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety warning: Repeatedly resetting a breaker on a shorted microwave can be dangerous. Do not continue to reset and retry.
User checks:
- Try a different outlet on a dedicated circuit (not GFCI, if allowed by local code) to rule out a weak breaker.
- Inspect the power cord for visible damage.
If the breaker trips immediately when you press START, the internal high-voltage components are likely shorted. Do not open the microwave unless you are trained; contact a technician or replace the unit.
Repair Difficulty
Required Part
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